Published in 1992 There are ... items referenced. 1992 -- B.M. Maschke, A.J. van der SchaftPort-Controlled Hamiltonian Systems: Modelling Origins and Systemtheoretic Properties 1992 -- B.M. Maschke, A.J. Van Der Schaft, P.C. BreedveldAn intrinsic hamiltonian formulation of network dynamics: non-standard poisson structures and gyrators